Separable square.



wf.` J. SHUART. SEPABABLB SQUARE. APPLIOAIIOII FILED DEU. 14, 1907;

Patented Feb. 9; 19.09.

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f THE Nokkls Ptrzlls co., WAsmNmaN, n. c

PATENT oEEroE.

WILBERT J. SHUART, OF DETROIT, MICHIGAN.

SEPARABLE SQUARE.

Specification of Letters Patent.

Patented Feb. 9, 1909.

Application led December 14, 1907.' Serial No. 406,426.

and I. do declare the following to be a full,

clear, and exact description of the invention,

such as will enable others skilled in the art to` whichit appertains tomake and use the same, reference being had to the accompanying drawings,and to the iguresof referencey marked thereon, which form a part of thisspecification. Y

This invention relates to new and useful improvements in squares, andconsists in the construction and' arrangement of parts hereinafter fullyset forth and claimed.

The object of the invention is to produce a square for artiticerswherein the arrangement is such as to enable the Vright angle parts ofthe square to be readily se arated so that they may be placed side byside for convenience in packing the implement in a tool box or forshipping, provisionbeing made for securing the parts together in amanner to retain themroperly in place without interfering with t euse ofthe imv lement.

The above object is Vattained y the structure illustrated in theaccompanying drawings, in which-f y Figure 1 is a plan view of a squareinvolving my invention, parts being broken away. Fig. 2 is a similarv1ew showing the right angle members detached. Fig. 3 is an exaggeratedlongitudinal section as on line 3-3 of Fig. 1. Fig. 4 is an exaggeratedtransverse section as on line 4--4 of Fig. 1. Fig. 5 is a fragmentaryview in perspective, showing the members of the square detached, thegraduations being omitted therefrom. Fig. 6 is an exaggerated transversesection ason line 6*-6 of Fig. 1.

Referring to the characters of reference 1 designates the wide blade ormember of the square, and 2 the relatively narrow blade or member.Projecting at right angles from the member 1 are the opposed arms 3having between them the longitudinally extending tapered slot 4, saidarms lying in the plane of the member '1 and having at their outer endsthe tenons 5. Projecting centrally into the slot 4 from the member 1 isa spring catch 6 which lies in the plane of the arms 3 and which for thegreater portion of its length is one-half the thickness of the materialof the square, the outer end of said catch being equal in thickness tothe thickness of the l .of the se arable"parts of the square together,as ereinafter explained. The inner edge of each of the arms 3 isprovided witha groove, and the opposite edges of the tenons 5 are alsogrooved for purposes hereinafter explained.

The member 2 ofthe square is provided at its inner end with a projectingta ered blade 9 adapted to enter the tapered s ot between the arms 3,and having marginal tongues 10 adapted to enter the grooves lin theinner edges of said arms, as clearly shown in Fig. 4. The inner end ofthe blade 9 is rovided with a longitudinal recess 1l equa in depth tohalf the thickness of said blade adapted to receive the spring catch 6,said blade having Yat the terminal of said recess an aperture 12 intowhich the enlarged end of the spring ycatch is adapted to enter and themargin of which is adapted to be engaged by the shoulder 7 of said catchto lock said parts together. At the base of the blade 9 of the member 2are the mortises 13 into which the tenons 5 on the outer ends of thearms 3 are adapted to enter, the marginal projections 14 of the member 2having the tongues 15 lwhich enter the outer marginal grooves in thetenonsv 5 and in the outer ends of the arms 3.' j To join the parts ormembers of the square, the blade 9 of the member 2 is insertedlongitudinally into the slot between the arms 3 of the member 1, themarginal tongues of the blade 9 entering the grooves inthe edges of saidarms and the spring catch 6 engaging and lying in the recess 11 andaperture 12 in said blade, whereby the members of the square becomerigidly locked together in the same plane. The tenons 5 on the arms 3enterin the mortises at the base of the tongue of t e member 2 preventthe spreading of said arms 3 and assist in securely locking all of theparts in alinement, thereby obviating any projecting part to interferewith the use of the square. By this means of uniting the parts ormembers of the square, they become rigidly joined at right angles in amanner to enable them to be readily detached or separated, when desired.

To separate the parts of the square, it is only necessary to spring thecatch 6 out-A wardly so as to disengage the shoulder 7 at the'endthereof from the aperture l2, when said parts may be detached by drawinglongitudinally upon the part 2.

By this arrangement the right angle members of the square may be readilyseparated, enabling the square to be easily placed in a tool box withoutany part thereof projecting from said box, obviating the necessity ofcutting a slit in the tool box for the protrusion of the end of thesquare, as commonly practiced.

Having thus fully set vforth my invention, what I claim as new anddesire to secure by Letters Patent, is

A square consisting of separable parts, one part having opposed armsprojecting at right angles therefrom in the plane thereof, said armshaving marginal grooves, the other part having a projecting blade inalineinent therewith adapted to enter between said arms and havingmarginal tongues which enter the grooves thereof, a spring catch onepart having opposed arms projecting at right angles therefrom in thesaine plane,

.and inclined on their inner edges to forni a tapered opening betweenthem and a spring` tongue extending between said arms in the planethereof, the other part having an extending tapered blade adapted toenter between said arms, means for preventing lateral movement betweenthe arnis and blade, the end of said blade having a recess to receivesaid spring tongue.

In testimony whereof l sign this specilication in the presence of twowitnesses.

WlLBEl-T J. SrilUi-"tlt". itnesses O. B. BAENZIGER, G. HOWLETT.

